Nathan sthlzbekoeb



Patented Aug. 24, 1926.

) NATHAN BULZBEME B, 01' NEW YORK, I. Y.

OFFICE.

OOI YING- AND TRANSFER HAW AND .IETEOD OI PREPARATION- I .Io Drawing.

In my prior application, Serial No. 582,087 I describe, among other matters, the production of transfer pictures, prints, reproduc tion, etc. on asbestos paper, particularly asl bestos aperprepared with colloidal aluminum si 'cate, etc. f

The present invention relates to improvements in copying and transfer material and to methods of their preparation, and the present invention may be considered an improvement uponthe invention of my said prior application. 1

The present invention relates particularly to composite articles and objects in which asbestos paper, and particularly asbestos aper prepared with colloidal aluminum s licate, etc., is used in combination with another layer of material to give composite prints and transfers which are suitable for 2 specific uses, as for lantern slides to take the lace, in certain cases, of glass plates and lms, etc., and also for other purposes.

The present invention includes various composite articles in which asbestos paper v is used in combination with another material or other materials, and I will describe :pecifically, by way of illustration, some of ese combinations, without, however, limiting in self to these and to the specific process of t eir production as described below.

As an example and embodiment of the composite articles or objects of the invention I will describe the making of a slide which can be used in a magic lantern or motion 36 picture projection apparatus:

A piece of asbestos paper of an absorbent v character is first prepared. This may advantageously be prepared with the aid of colloidal aluminum silicate, although pa- 0 per of a sufliciently absorbent character otherwise prepared may be used. Aluminum silicate is a salt-like compound or combination of alumina and silica, and, in a colloidal state, has valuable properties as a 46 binder. When colloidal aluminum silicate suitably diluted with water, is admixed with asbestos fibre for the manufacture of paper, the colloidal solution of aluminum silicate 'lias' valuable properties as a' binder and im- Applioation fled October 87,- 1922. serial 10. 587,480.

parts valuable properties to the asbestos pa- 0 per. The paper is absorbent and can by suit-' able treatment be converted into a translucent or transparent paper.

Thesheet of asbestos paper was placed over a rotary photogravure print. A mix- 65 ture of carbon tetrachloride and benzol was employed to moisten the asbestos until the print clearly appeared through. The solvent evaporates quickly. A glass plate, of proper size, and such as is used for lantern pro ection, was wetted on one side with sodium silicate solution (ordinary water glass with about one-half as much water added) and the asbestos aper with the absorbed image was smoot 1y placed on the plate, and permitted to dry. As a result there was obtained a composite picture suitable for projection. When this picture was placed in a magic lantern and the picture projected, it, showed on the screen the picture and the matter of the original print the asbestos paper, made with colloidal aluminum silicate, and attached to the glass plate with a layer of sodium silicate, being suflic'iently translucent to permit the use of 15 the picture in a projection machine.

' Instead of using the picture produced as above described in a pro ection apparatus, it may be used as an ordinary negative for making photographic prints, it being only necessary, if a positive was placed on the piper to reversesuch rint, in a manner well own in photograp ic printing. In this way it is Possible to make numerous reproductions rom any material, the print of which contains ink and coloring matter which will be sufiicientlv absorbed by the asbestos pa er, used in the way described.

Instea of using sodium silicate for se-. curing the asbestos paper to the glass plate, other suitable adhesives may be employed, but I prefer, in many cases, to use the silicate, as it is non-combustible and strengthens the icture and improves it so that it can be tter projected. Furthermore, the ima e on the asbestosis also well brought out y the use of sodium silicate solution of proper concentration, as the paper becomes quite transparent at places where little or none of the rota photogravure ink has been absorbed wh1le at such points as the ink has been absorbed by the paper, the silicate is taken up little. or not at all, especially when a dilute solution is employed. This action of the sodium silicate solution, whereby it is more absorbed by the arts of the asbestos paper which have not a sorbed the rotary photogravure ink, can readily be noted, w entakmg the picture, and after copying from. the rotary photogravure, by

treatingit with a dilute solution of sodium silicate, when it will be noticed that the asbestos paper will be difierently affected where the ink has been absorbed from Where it has not been absorbed. As a result, a pcculiar plastic efi'ect will be obtained, and itwill ap car as if the picture had been embossed on the paper. Instead of using pure sodium silicate in solution, mixtures may be used and coloring matter added to give a desired tint, etc.

In certain cases, instead of applying the asbestos paper with the image or picture on it to a glass plate, the picture on the asbestos paper may be placed on some other transparent or translucent material to form the composite product. For example, transparent or translucent paper, parchment, cellulose acetate, etc., can be used, or even another sheet of asbestos, properly treated to give a transparent or translucent sheet.

In a similar manner to that described for the reproduction of pictures, letters and reading matter and. writing, drawings, etc, may be used and reproductions made. One can readil see that in this way accurate photograp ic reproductions may be prepared from any printed or written or drawn matter made with suitable ink, and this without the use of a camera.

If the asbestos paper he treated with a sensitive emulsion such as is used in making ordinary photographic material like plates, films, papers, etc., reproductions or images may be made photographically on the asbesfor example, by applying white shellac with a little castor oil to make it more pliable. An asbestos sheet made with colloidal aluminum silicate, and coated with a layer of varnish, becomes sufficiently transparent so that the printed matter or reproduction can be readily seen through it. The resulting asbestos sheet with the reproduced matter is pasted on a piece of paper of suitable quality, thus giving a composite product made up of the asbestos sheet with the reproduced matter, and the paper to which 1t is secured.

Instead of making the asbestos sheet transparent before applying it to' the paper, the asbestos copy may be first pasted on the paper, the wrong side up, and then made transparent, when the copied or reproduced matter, Writing, etc., will appear correctly and not reversed.

By first reversing the original matter desired to be copied, and then copying it on the asbestos, paper, a correct copy can. be obtained directly on the asbestos paper so that it will not be necessary to make the asbestos sheet transparent in order that the reproduced matter may be seen, but such as estos sheet may be directly placed on or combined with a suitable paper togive a composite sheet.

Such composite products, made of asbestos paper with the image reproduced on it, together with ordinary paper, have the property when subjected to treatment with fire that the paper back will burn off, or will be charred, leaving the asbestos and the rint or image intact if the ink used is re-resistent, as is the case with inks containing metallic compounds, such as iron compounds. For example, where black oxide of iron is used sus ended in mucilaginous matter, the image formed by it, or t e printing or writing formed by it, will re main even after the paper back may be burned ofi. Such'composite products, made in part or in whole of asbestos paper, with the image applied to the asbestos paper, are very valuable in preserving important documents, bonds, paper-money, books, drawings, etc. from destruction by fire, while the paper or cloth or other part of the composite article will give the asbestos tensile strength and other desirable properties until such time as fire may destroy this part of the composite article and leave only the asbestos part of it with the image thereon, or with the printing or writing or other matter thereon.

Modifications of the above described matter and composite articles such as will suggest themselves to those skilled in the art are included in the invention.

When copyin on the asbestos material plctures, etc. ma c with a water soluble ink and color, the copying onto the asbestos Y paper can of course be effected by moistenmg the paper only with water, Such inks, whlch are water soluble will be particularly desirable also when preparing books or other material for childrens amusement, where even uninflammable ink solvents are less desirablethan ordinary always procurable water. The children may even prepare the pictures themselves with such suitable water soluble material or pi ents, even where the .pi ments are themse ves insoluble, but suspen able in water by the use ofmucilage or other suitable materia I such pictures or other images or wri are suitably prepared, and transferred to the asbestos paper, many copies may be prepared from the same print, or many repro uctions may be made on the asbems 'tfi' of the same original picture or print. e asbestos sheet with t e copy or print can then be combined with some suitable surface, which may have strength and be untearable if desired and composite roducts obtained, such as slides, films, as we 1 as pietures on more or less opaque and translucent. surfaces, suitable for gifts or presents, can'be obtained. a

When the prints on the asbestos pa r are treated with varnish, or other suitab e material, they become translucent, and, in certain'cases, transparent, as well as water proof, so that the pictures are washable, as described in my pending application, Se-

rial No. 505097.

In'ce-rtain cases the asbestos may first be spread over. the surface of the other'materialiand the copy, then prepared on the same, thus giving the composite product by a somewhat different method of preparation.

So, also, in certain cases, the material may be printed from type, etc. on to the asbes- I tos directly, either before-or after combining with another or other surfaces.

It will thus be seen that the invention provides new and improved composite articles or objects, particularly pictures or images or reproductions of printed or written or other matter; and that the composite objects are made up of an asbestos la er or sheet of an absorbent character whic carries the picture or other reproduced matter, and another layer or layers which may advantageously be of a character adapting the composite article for its intended purpose. For example,'for making slides, etc, a glass plate may be used in combination with the asbestos sheet. 'Formaln'ng other composite objects, a paper or other layer adgzg strength to the composite sheet may be while still giving a composite product which is flexible. By treating the composite sheet,

or the asbestos paper after the image has been reproduced on it, with a suitable varnish, the sheet can be made translucent or transparent, or ma be'waterproof. So also, by securing the as stos pa r to a glass or other backing by means ,0 a solution such as sodium silicate, a composite article or tings in part of a sheet of translucent I object or reproduction is obtained in which the picture or image is emphasized by the action of the sodium silicate solution upon such parts of the asbestos paper as do not have the image absorbed or appearing on it.

I claim: 1. A composite sheet or article made up in part of a sheet of translucent asbestos and in part of a surface of some other material.

. 2. A composite'sheet or article made up asbestos paper,-sa1d asbestos paper being in combination with the surface of some material of a translucentnature.

3. A composite sheet or article comprising a sheet of translucent asbestos paper withv paper with printed or copied matter thereon, secured to the surface of the glass.

.6. Composite slides comprising a glass layer, a layer of translucent asbestos with pictures, letters, prints, etc, carried thereby, said asbestos layer being secured to the glass surface. v

7. A slide of glass having secured thereto by a sodium silicate solution a sheet of as paper of an absorbent character having printed or copied matter thereon.

8. A compositesheet or objectmade up of translucent asbestos paper in combination with a sheet or layer of another material tov which the asbestos paper is secured, and which other material will give strength. to the composite object.

9. A picture or other reproduction of a composite character, on translucent a s paper, and the as bestos paper being combined into an integral composite object by securing the ashes tos paper to the surface of a translucent or transparent material by some suitable adhesive; 4

10. A composite object comprising a glass surface having asbestos paper secured thereto by an inorganic adhesive.

11. A composite object comprising a glass surface having secured thereto by means of sodium silicate a sheet of "asbestos paper made with colloidal aluminium silicate as a binder.

the reproduction being 12. The method of making a composite object upon asbestos paper, and securing the sheet of asbestos paper to alayer or sheet of material of a different character by means suiting asbestos paper by suitable adhesive of a suitable adhesive. to a translucent or transparent surface. 10 13. Theprocess of preparing translucent 14. The method of making a composite I and transparent pictures and other reproobject which comprises securing a sheet of 5 dficfions; which comprises transferring the asbestos paper to a glass surface by means material to be reproduced on to asbestos of sodium silicate.

aper, rendering the asbestos paper transucent or transparent, and securing the re- NATHAN SULZBERGER. 

